According to all eyewitnesses, J.D. Tippit was shot no later than 1:06pm. Oswald was standing outside his apartment at 1:04, 0.8 miles from the scene of the murder. So the Warren Commission needed to add ten minutes to the time of the murder to get Oswald at the scene by 1:16. Even that’s a stretch; covering 0.8 miles in 12 minutes (4.0 mph) is very fast walking. This lie was standard operating procedure for the Commission. Witness testimony and physical evidence which proved Oswald’s innocence was ignored or altered to fit the Lone Gunman myth.

And this is the SMOKING GUN: https://22novembernetwork.wordpress.com/2014/11/15/the-murder-of-j-d-tippit-by-s-r-dusty-rohde/comment-page-1/
From the article:
The insert shown above is taken from the actual Certificate of Death, Tippit’s name was misspelled, but the document clearly shows the time and date of death. There is no way Lee Harvey Oswald shot a “living” J.D. Tippit at either 1:15 or 1:16pm. That statement by the Warren Commission was an outright lie. A lie expressed for the sole purpose of deceiving the American public. The Warren Commission had the Tippit documents in their hands, they knew the “legal” time of death, they knew Oswald couldn’t have shot Tippit at 1:15 or 1:16pm, and yet they still chose to tell the lie.

J.D. Tippit could not have been shot at 1:16, his legal and lawful time of death is recorded as 1:16pm. Now why does that matter? Before Tippit was pronounced “dead” at the hospital, he had to be removed from the ambulance, wheeled to the emergency room, transferred off of the ambulance gurney onto the hospital bed. Doctors had to do a quick scan, then attempt to clear an airway and possibly administer CPR in the attempt to save Tippit’s life, all “before” declaring the man officially dead.
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Note: The death certificate from Methodist Hospital signed by Joe B. Brown lists the time of death at 1:15. The police supplementary offense report states that Dr. Liguori pronounced the officer dead at 1:15. An FBI report dated 11/29/63 that states that Dr. Liguori pronounced the officer dead at 1:25 PM looks like it originally said 1:15 and was changed.

• Helen Markham signs an affidavit on November 22nd that she was standing at the corner at “approximately 1:06” when she saw Officer Tippit pull over and talk to a man for a few seconds before he exited his vehicle and was shot She maintained a consistent time when she told the Warren Commision that “it wasn’t 6 or 7 minutes after 1” http://jfk.ci.dallas.tx.us/04/0444-001.gif

• Mrs. Margie Higgins of 417 East 10th Street said that “I just looked up at the clock on my television to verify the time and it said 1:06. At that point I heard the shots”. http://thegirlonthestairs.wordpress.com/

• Domingo Benavides was driving west along 10th Street when he heard the shooting. Startled by the shots, Benavides pulled his pick-up truck to the curb almost directly across the street from Tippit’s patrol car, and ducked down inside his truck. Benavides informed the Warren Commission that he remained in his pick-up truck “for a few minutes” before exiting. He then went to Tippit and seeing that he was dead used Tippit’s car radio to call for help. When he replaced the microphone he looked up to see DP T. F. Bowley, who signed an affidavit that he arrived and saw “several people were at the scene” and Officer Tippit lying on the street dead. He checked his watch; it was 1:10. He then used the officer’s car radio to call in the murder. http://www.aarclibrary.org/publib/jfk/wc/wcvols/wh6/html/WC_Vol6_0228a.htm

• On January 21st 1964, Albert Austin signed an affidavit saying that “sometime after 1:00 PM” he heard approximately two or three shots and saw a policeman lying in front of a police car on the left front side. http://jfkassassination.net/russ/testimony/austin.htm

• During the Warren Commission testimony of Officer J. M. Poe, assistant counsel Joseph A. Ball refers to Poe entering a witness-provided description on the dispatcher transcript log at 1:22 PM. According to Poe, by the time he arrived at the scene there were already “150 to 200 people around there” and the ambulance had already left. http://mcadams.posc.mu.edu/russ/testimony/poe.htm

Did the Warren Commission tell the truth about anything? It did not mention that bullets recovered from Tippit’s body were from an automatic and Oswald had a revolver; or the vast majority of Dealey Plaza witnesses heard or saw shots from the Grassy Knoll. It never mentioned the Zapuder film; or the impossible Magic Bullet which entered JFK’s back 5.5″ below the collar and never exited; or the JFK Limo coming to a full stop; or the “double-bang” of nearly simultaneous shots; or the evidence that Oswald was standing in the Doorway: Billy Lovelady and Wesley Frazier both testified numerous times that Lovelady was standing on the steps in front of Frazier and that he (Frazier) was standing on the TOP level entrance – as was Doorman (Oswald); or the fake Oswald backyard photos; or the 7.65 Mauser initially identified by 5 Dallas police morphing into a Mannlicher Carcano; or why no record of Oswald ordering or taking delivery of the Carcano; or that Oswald was a $200/month FBI informer and CIA asset.

And the clincher: they expect us to believe that Oswald ran from the 6th floor to the second floor lunchroom in 75-90 seconds, seen holding a coke and cool as a cucumber. That’s almost as bad as Oswald’s 2 minute one mile sprint to the Tippit scene. Faster than a speeding bullet. Sure. One fairy tale after another.